Celebrity Inventors
Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8094427 | System for precisely controlling the operational characteristics of a relay A system for precisely controlling the operational characteristics of a relay is provided. In one embodiment, the invention relates to a relay having performance characteristics that vary with a temperature of the relay, where the relay comprises a plurality of oper... | 01/10/2012 |
| 7995320 | System and method for protecting a coil structure in a controlled switch A system and method for protecting a coil structure in a controlled switch. In one embodiment, the invention relates to a circuit including at least one load switch connectable between a power source and a load and at least one auxiliary switch, each switch actuable... | 08/09/2011 |
| 7746620 | Medical fluid machine having solenoid control system with temperature compensation A medical fluid machine having a solenoid control system with temperature compensation includes an electromechanical solenoid including an armature and a coil, a voltage source, a switching device configured to selectively apply power from the voltage source to the ... | 06/29/2010 |
| 7443178 | Circuit arrangement of the temperature compensation of a measuring resistor structure An electrical circuit for the temperature compensation of at least one measuring resistor structure integrated in a semiconductor body includes at least one further resistor structure which is likewise concomitantly integrated into the semiconductor body and is ther... | 10/28/2008 |
| 7352522 | Control means and method of controlling a current through a coil Method of controlling a current through a coil (L) for the generation of a magnetic field (H) in which: a parameter is determined which is a measure for the value of the resistance (RL) of the coil (L), the current (IL) through the coil (L) is ... | 04/01/2008 |
| 7317371 | Linear variable differential transformer with complimentary step-winding secondary coils A linear variable differential transformer comprising a coil form; a first primary coil; an optional second primary coil; a first secondary coil; and a second secondary coil; wherein the windings of the secondary coils create complimentary and preferably uniform ste... | 01/08/2008 |
| 7233476 | Actuator thermal protection in haptic feedback devices Method and apparatus for providing thermal protection for actuators used in haptic feedback interface devices. An average energy in the actuator over a predetermined period of time is determined, and the maximum allowable current level in the actuator is reduced if ... | 06/19/2007 |
| 7183887 | Control means and method of controlling a current through a coil An electronic circuit comprising means (CMNS) for controlling a current (IL) through a coil (L) for the generation of a magnetic field (H). The means (CMNS) comprise means (DMNS) for the determination of a parameter which is a measure for the value of the resistance... | 02/27/2007 |
| 7165529 | Method to control electromechanical valves in a DISI engine A system and method are disclosed for operating an internal combustion engine in which the intake valves are electromechanical valves and the engine has direct fuel injection. By opening the intake valves during the intake stroke when the piston is moving at its max... | 01/23/2007 |
| 7161787 | Low power solenoid driver circuit The present invention provides a system and method for controlling a solenoid that ensures accurate timing between the enabling of the driving circuit and the activation of the solenoid, while simultaneously providing a two energy level driving scheme to reduce powe... | 01/09/2007 |
| 7107946 | Electromechanically actuated valve control for an internal combustion engine A method is presented to control engine valve selection of an internal combustion engine. Electromechanical valves are selected in a manner to reduce fuel consumption and improve engine drivability. ... | 09/19/2006 |
| 7089736 | Variable nozzle turbo (VNT) solenoid temperature estimator A method of creating a solenoid temperature estimator includes operating a solenoid based on a data point including a plurality of operating parameters and determining a temperature of the solenoid. The method further includes recording steady-state values for the t... | 08/15/2006 |
| 7053603 | Circuit arrangement with a linear variable differential transformer (LVDT) as a displacement sensor or force sensor In a circuit arrangement having a linear variable differential transformer as a displacement sensor or force sensor, having a selection circuit which is connected to the primary coil of the transformer and which provides an output current for triggering the primary ... | 05/30/2006 |
| 6975495 | Circuit configuration and method for measuring and limiting currents A circuit configuration and a method for determining a current drawn from a mains by a converter through a dc voltage intermediate circuit, replaces a required pulse-resistant input current measuring resistor with a conductor track of the circuit configuration itsel... | 12/13/2005 |
| 6639780 | Coolant feeding device of machine tool The present invention is characterized by a coolant feeding device of a machine tool that supplies coolant to a mist generating device (10) at the tip of a spindle (9) through a coolant feed line (40). A coolant forcing means (11) is provided to the tip o... | 10/28/2003 |
| 6574084 | Electromagnetic repulsion driven switch An electromagnetic repulsion drive switching device in which a contact-closing coil and a contact-opening coil are arranged to confront a conductive repulsive member, and in which a drive current is fed to a selected one of the individual coils from a cap... | 06/03/2003 |
| 6333843 | Method of starting an electromagnetic actuator operating a cylinder valve of a piston-type internal-combustion engine A method for starting up an electromagnetic actuator operating an engine cylinder valve. The actuator has two spaced electromagnets, between which an armature, connected to the cylinder valve, is reciprocated against a restoring spring from a center posit... | 12/25/2001 |
| 6313977 | Circuit configuration for regulating the current fed to an electromechanical component in a motor vehicle A circuit configuration serves to regulate in particular a coil current for a hydraulic pressure regulating valve of a motor vehicle transmission. A current measuring resistor configured as a thick-film resistor and a temperature sensor, that detects a tr... | 11/06/2001 |
| 6297573 | Three-phase motor A three-phase a.c. motor for operation with a three-phase mains supply (1), with three single- or multiple-strand windings (2u, 2v, 2w) in a star configuration (2) in which terminals (U2, V2, W2) at the neutral ends of the windings (2u, 2v, 2w) are access... | 10/02/2001 |
| 6275368 | Method and apparatus for controlling electromagnetic valve in industrial vehicle A method and an apparatus for preventing a solenoid from being heated by an exciting current. When a hydraulic cylinder is permitted to extend and retract, a controller commands a high-side driver to send a moving current to the solenoid such that a valve... | 08/14/2001 |
| 6262556 | Force motor current control for an electronically controlled automatic transmission An improved force motor current control including feed-forward and feed-back control terms summed to determine a force motor activation for achieving a current command. The feed-forward control term estimates the force motor activation required to achieve... | 07/17/2001 |
| 5930738 | Vehicle computer system environment monitor A combination of software and hardware in a computer system prevents a hard disk from starting if an environmental parameter (i.e. temperature) is outside operational limits. An extension to the basic input/output software normally used with IBM-PC archit... | 07/27/1999 |
| 5333087 | Superconducting magnet apparatus with a magnetic shield A superconducting magnet apparatus has two or more divided superconducting coils successively arrayed in series and a magnetic shield. The divided superconducting coils arrayed in the axial direction are successively electrically connected in series, and ... | 07/26/1994 |
| 5199637 | Electronic thermostat having correction for internally generated heat from load switching The apparatus controlling operation of a digital thermostat mounted in an enclosure corrects the internally measured temperature for heat generated within the thermostat enclosure by the switching element controlling operation of the load, typically a HVA... | 04/06/1993 |
| 5089930 | Temperature compensated linear variable transformer A differential transformer is provided comprising an elongated bobbin having primary and secondary coils wound about separated sections. A ferromagnetic armature is movably disposed within a core of the bobbin for movement between the separated sections. ... | 02/18/1992 |
| 4651576 | Gyroscope having temperature controlling arrangement Gyroscopes, particularly those with permanent magnet torquers, may be temperature sensitive. A temperature signal may be derived and used to correct the temperature dependent parameters such as gyro scale factor. Herein, instead of or in addition to such ... | 03/24/1987 |
| 4236410 | Temperature-compensated electromagnetic flowmeter An electromagnetic flowmeter in which the fluid to be metered is conducted through a flow tube provided with a pair of diametrically-opposed electrodes. The fluid intercepts a magnetic field established in the flow tube by a magnetizable core having a coi... | 12/02/1980 |
| 4159502 | Electronic compensation for temperature variation of gyroscope damping A signal compensator is combined with a second order system, for example, a fluid damped rate gyroscope, which produces a signal in response to the movements of a damped member for providing an output signal which is indicative of the input to the second ... | 06/26/1979 |
| 3939403 | Device for maintaining constant the temperature of a coil fed by an A.C. current source A measuring coil comprises two windings, each being formed by winding simultaneously two insulated wires having the same size, the two wires of each winding extending side by side. The windings formed by the single turns of the wires in each winding are i... | 02/17/1976 |
